Sash lock



FIG. 1 is front elevation view of a sash lock showing our new design;

FIG. 2 is a top perspective view thereof;

FIG. 3 is a bottom perspective view thereof;

FIG. 4 is a left side perspective view thereof;

FIG. 5 is a right side perspective view thereof;

FIG. 6 is a top right perspective view, thereof; and,

FIG. 7 is a rear perspective view thereof.

The broken line showing of the sash lock is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a sash lock, as shown and described. 